Yii2设置变量到布局layout

通过全局params配置

Yii::$app->params['myVar']

通过session

Yii::app()->session['myvar']

或者通过Flash Message

通过控制器传递变量方式

首先,需要再控制器添加参数

class SiteController extends CController {

    public $myvar;
//...

然后在layout/main.php获取控制器变量

$this->context->myvar
Yii::$app->controller->myvar

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